Automatic oiling system for deep-well turbine pumps



March 18, 1930. R. M. MAGNUSON 1,750,893

AUTOMATIC OILING SYSTEM FOR DEE 1 WELL TURBINE PUMPS Filed Feb. 14, 1927 wwilbm ATTORNEY Patented Mar. 18, 1930 UNITED STATES. PATIENT OFFICE BOY M. MAGNUSON, or'srooxrron, CALIFORNIA, ASSIGNOR T STERLING rumr wonxs, or s'rocxromcanrronnm, A conrorm'rron AUTOMATIC OILING SYSTEM FOR DEEP-WELL TURBINE PUMPS Application filed February 14, 1927. Serial No. 168,060. R u

This invention relates to improvements in oiling systems for pumping apparatus, in

which a vertical electric motor is mounted in direct connection with the pump head and is directly connected with the pump shaft, which is supported by and suspended from bearings in the head. In pump operating mechanisms of this character there is one bearing above the-motor and another one below, and of course it is necessary ,that these bearings shall be kept constantly lubricated whilethe pump is operatin At the same time it is not desirable that 011 shall continue to feed when the pump is stopped, nor that an excessive amount shall be' fed to the bearings at any time, since this is only a waste of oil.

The principal object of my invention therefore is to provide an automatically operating oiling system which will operate only when 29 the motor is in operation and which controls the feed of oil to the bearings in'the proper quantity according to. the speed of the motor.

The operating parts of the system and the oil reservoir itself are contained within the endbell of the pump head so that nothing projects on the outside of the head to possibly be damaged or to spoil the neat and symmetrical appearance of the head. Also the operating mechanism is of such a nature that thereis nothing to wear or get out of order and no adjustments or other attention on the part of an operator are'ever necessary, other than keeping a supply of oil in the reservoir. This being of large capacity even such attention is relatively infrequent.

A further object of the invention is to arrange the parts of the oil system in such a manner that there will be no churning or disturbing of the main body of oil such as causes the formation of a frothy emulsion.

A further object of the invention is to pro duce a simple and inexpensive device and yet one which will be exceedingly eifective for the purpose for which it is designed.

' These" objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a-perusal of the following specification and claims.

In the drawings similar characters of ref erence indicate corresponding parts in the porting casting 1 adapted atits lower end to be connected to a well casing and having a discharge passage 2 disposed to lead upwardly from the casing to one side of the member 1. Supported on and secured to the member 1 is a cylindrical housing '3 in which the stator structure 4: of the electric driving motor is mounted. Supported by and fixed on the housing 3 is the end-bell casting 5. This endbell is formed with a continuous enclosed chamber 6 to serve as an oil reservoir, the chamber having afiller hole on one side with a screen cup 7 depending .into the-hole and normally covered by a cap 8. Formed with the bell above the member 6 and somewhat below the top of the bell is a cylindrical support 9 for a thrust ball bearing 10, the inner race of which engages a sleeve 11 which projects downwardly therefrom and has the rotor structure 12 of the motor aliixed thereto 1n horizontal alinement with the stator 4.

Below the stator the sleeve terminates at and engages the inner race of an annular ballbearing 13 which is mounted in a supporting ring 14 formed with-the member 1 above the passage 2. This ring is covered both on top and bottom so that a chamber 15 is formed in which the ball-bearing is enclosed. The top wall of the passage 2 is formed- With a downwardly projecting cylindrical boss or" sleeve 16' in which is mounted a short tubular member 17, concentric with the sleeve 11 and adapted at its lower end for connection to a shaft-bearingbushing 17, to which in turn is-connected a en h of piping 17". A short tube 18'is secure to the bottom member of the chamber 15 and depends therefrom and into the to of the tube 17 a short distance. The pump s aft 19 projects through the members 17, 18, and 11 inspaced relation thereto to the upper end of the latter, to which it is.

sleeve 22 is secured in and depends from thebearing support 9 below the bearing to the bottom member 6 having spaced circumferential slots 23 cut around its bottom. This sleeve is concentric with and outwardly of the sleeve21. Turnable in the sleeve 22is an oil impeller comprising a cylinder 24 having atop flange 25 which overhangs the top of the sleeve 21 and rests. on an annular shoulder- 26 formed on the sleeve 11. This flange is clamped against the shoulderso as toturn with the sleeve 11 by means of a nut 27 on the .upper end of the sleeve which engages.

the innerrace of the bearing 10, which in turn bears against the top of the flange. The

upper end of the cylinder 24 is formed with an outwardly projecting narrow .band .or flange 28, which has a free running fit with the top .of the sleeve 22. This band is somewhat below the'top of the, flange 25 so that a small annular chamber 29 is formedbetween the impeller and the bottom of the bearing 10. Formed with the cylinder 24 below the band 28 are one or more flat bosses 30which have a running engagement with the sleeve 22. The bottom of the cylinder and bosses areabove the bottom of said sleeve or substantially in linewith the top of the slots 23. The vertical edge faces of the bosses are set son an angle in a vertical 'plane as shown at A, so that the rotationof the cylinder any oil caught by said faces will be thrown upward-- ly. Leading from thechamber 29 (which is above the cylinder and sleeve 22) to the outside of the hell 5 is a horizontal conduit 31 which then extends downwardly to the member 1 and thence inwardly thereof to a connection with the chamber 15 above the bearing 13. A control'valve 32 is interposed in this conduit preferably at the junction of the upper horizontal and vertical portions.

In operation as long as there is oil in the reservoir such oil can pass freely into the :space between the .sleeve 22 and cylinder 24 below the band 28 which is above the maximum oil level. With the rotation of the cylinder the oil between the cylinder and sleeve 22 is caught by the sloping surfaces A and thrown upwardly against the bottom of the band28. There is suflicient space between the band and the sleeve 22 to cause a certain amount of such oil to pass upwardl 'therebetween so as to be thrown against an engage the adjacent surfaces of the bearing 10. I The oil then collects in the chamber 29 from which it gsca'pes through the conduit 31 to the lower be ring 13. Oil collecting in the chamber 15 after passing through this bearing is dischargedinto the sleeve 17 through the tube 18 and passes on down to lubricate the various other pump shaft bearings.

It will be noted that while the rotatin'g'cylinder 24 is constantly engaged with a certain v-amountof oil, tending to churn the same and form an emulsion, this amount is very small and is isolated from the main body ofv oil by the sleeve 22. This main body of oil therefore remains undisturbed at all times and there is no tendency in the operation of the system for the oil to froth and expand so as to cause it to spill out through the cap 8.

The Hearing su port 9 is spaced from the 'side walls of the ell, being connected thereto by radial ribs 9, so as to leave vertical passages between the bell and support. This enables excess oil thrown upwardly and outwardly from the bearing 10 (due to the centrifugal action) to be first caught bythe side 'wall' of the bell, and to then drain back into the main reservoir.

From the foregoing description it will be readily seen that I have produced such a de-- vice as substantially fulfills the objects of the inventionas set-forth herein. g

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention what I claim as new and-useful and desire secure by Letters Patent is:

1. In a verticalpump head, a rotatable shaft, a bearing therefor, a support for the bearing, a sleeve-depending from the supcylinder and extending from the bottom of the flange downwardly and having a running fit with the sleeve, one side edge of the boss being disposed at an angle to a vertical plane.

' 2. In avertical 7 pump head, arotatableshaft, an annular bearing therefor adjacent.

its upper end, a support for the bearing, an oil reservoir disposed about the shaft below the bearing and support, means for pumping an! oil from the reservoir upwardly through the bearing, and an oil tight housing directly connected to the reservoir and progbecting upwardly over the bearing and sha in spaced relation to the support. 7

3. In a deep well pump, a vertical shaft, an oil reservoir adjacent the top of the shaft and closed on the bottom, an oil chamber above the reservoir, passage means between said chamber and reservoir, a bearin for the shaft below the reservoir, a passage om the chamber to said bearing connecting at its highest point with one side of the chamber, and means functioning solely with the rotation of the shaft for raising oil from the reservoir through said first named passage means and into the chamber to the level'of the connection of said last named passage therewith.

4. In a deep well pump, a vertical shaft, an oil reservoir adjacent the top of the shaft and closed on the bottom, a bearing for the shaft at a point below the reservoir, the reservoir being provided with an outlet passage above the normal oil level in the reservoir, means functioning with the rotation of the shaft to raise the oil from its normal level to the outlet, and passage means from the outlet to the bearing whereby oil raised to the outlet will i then pass by gravity to the bearing.

In testimony whereof I affix my signature.

ROY M. MAGNUSON. 

